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TRAPPER ~iNiNGiNC. <br />September 3, 2003 <br />RECEIVED <br />Mr. Chris Gates <br />Environmental Protection Specialist SEP 0 51003 <br />Colorado Department of Public Health and Environment <br />WQCD-PE-B2 Division of fdinerals and Geology <br />4300 Cherry Creek Drive South <br />Denver, CO 80222 <br />RE: CWDPS PERMIT NO. CO-0032115: PERMIT REVISION REQUEST <br />Dear Mr. Gates <br />Weekly NPDES monitoring indicates that the pH in Middle Flume pond (Outfall 020) is approaching 9.0. <br />Trapper requests that Primary and Alternate pH effluent parameters for this outfall be changed the same <br />as for Outfalls 001, 002 and 005. These three outfalls have a pH parameter range of 6.5 - 9.5 for the <br />months of June -September, then changes to 6.5 - 4.0 for the remainder of the year. Please see Part 1 <br />Page No. 5 of the referenced permit. <br />Also in Part I, Section A, Paragraph 5 on page 9, please include Outfall 020 in the Best Management <br />Practices paragraph. This will put the same special conditions on Outfall 020 as are on the other three <br />outfalls. <br />Thank you for your consideration. <br />If you need additional information, please contact me. <br />Sincerely, <br />~~,ye..cl rv~ <br />Frank M. Self <br />Sr. Environmental Specialist <br />cc: Janet Binns (DMG) <br />File 109.2.7.2 <br />Permit book (2 of 3) <br />M:\Water\DMR\2003 Pertni[ Revision <br />P.O. Box 187 Craig. Colorado 81626 (970) 824-4401 <br />